Aisha bint Abi Bakr · The Book on the Description of Hellfire

Have the Taqwa of Allah as His due, and do not die except as Muslims. And the Messenger of Allah (s.a.w) said: "If only a drop of Az-Zaqqum were to drip into the abode of the world, it would spoil the peoples' livelihood, so how about the person for whom it is his food?"

"The inhabitants of the Fire will suffer from a hunger equal to the punishment they experience, so they will seek relief, and be given to eat of Dari; which will neither nourish nor avail against hunger. So they will (again) seek food to relieve (their hunger), and they will be given to eat of a food that causes one to choke. Then they will remember that they used remedy for choking in the world by drinking something. So they will…

"And therein they will grimace in displace lips. -He will be grilled by the Fire until his upper lip is folded up reaching the middle of his head, And his bottom lip pains down, until it hits his navel."

"This Fire of yours, which the sons of Adam kindle, is one part from seventy parts of the heat of the Hell." They said: "By Allah! Would it not have been enough O Messenger of Allah?!" He said: "It is sixty-nine parts more – all of them similar in heat.” (Sahih)